Features<br><br>High Light Transmittance and Refractive Index: The lens is coated, has high light transmittance and high refractive index, making the image brighter and clearer.<br><br>Standard and Universal: The screw interface size is the international standard RMS size, which can be used by 95% of professional biological on the market.<br><br>Brass Material: Microscope objective len made of brass material with exquisite workmanship, this objective is corrosion resistant, can no worry about falling down.<br><br>Chrome Plated Shell: The shell of the microscope objective is chrome plated, which is stable and durable features, can use for long time.<br><br>Application: This microscope objective as the important fitting of in laboratory, mainly used for microscope magnification to observe objects<br><br>Specification:<br>Item Type: Achromatic Microscope Objective<br>Material: Brass<br>Model: 4/0.10<br>Use: Microscope Accessories<br>Interface Size: Approx. 20.2mm/0.8in (International standard RMS size)<br>Magnification: 4X<br>Numerical Aperture: Approx. 0.10mm<br>Cover Glass Applicable Thickness: Approx.0.17mm<br>Microscope Applicable Mechanical Tube Length: Approx. 160mm/6.3in<br>Working Distance: Approx. 0.13mm<br>Common Rail Distance: Approx. 195mm/7.7in<br>Parfocal Distance: Approx. 45mm/1.8in<br><br>Package List:<br>1 x Achromatic Microscope Objective<br>1 x Storage Bottle<br><br>Package List<br>1 x Achromatic Microscope Objective<br><br>1 x Storage Bottle